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Old 04-09-2012, 11:06   #1
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Perkins 4-107 Starter

OK all you Perkins 4-107 experts ... I've learned a whole lot about how my engine should operate reading responses you've made to different posts.
I've got my engine all back together, completely rebuilt. Remember, I've never ran a diesel before in my life so this is all new to me. Don't worry, I've been a mechanic of one sort or another my whole life.
My starter is on the opposite side as the injector pump. I'm not actually starting the engine yet; just rolling it over. When I run the starter motor it engages but does not withdraw. When I bench test the starter the spring retracts fine. ... Will the starter retract when the engine starts? What's normal?
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Old 04-09-2012, 18:26   #2
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Re: Perkins 4-107 Starter

I suspect the drag between the gears is preventing the retraction. When the flywheel speed exceeds the starter speed the gears will unload and I suspect it will retract.

Nice work BTW...
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Old 05-10-2012, 11:21   #3
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Re: Perkins 4-107 Starter

Thanks ... you were correct. I'm finished and have started the engine. The starter retracts with no problem.
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